Pushrod Length question

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May 27, 2004 | 09:56 AM

Flyer

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From: Armpit of East TX

Pushrod Length question

I'm fixing to put a cam in my truck, swapping actually. I'm going with a 224/227. My question is, do I need to use a different size pushrod than stock? I know I need hardened ones, but what length should I get? Thanks for the help.

May 27, 2004 | 10:05 AM

killer01ws6

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From: Troy Al

if all you are doing is changing the cam, and going for hardended PRs,
Yes 7.4 stock replacements are what you need.

May 27, 2004 | 10:13 AM

Flyer

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From: Armpit of East TX

Even with the higher lift cam ?

May 27, 2004 | 10:16 AM

killer01ws6

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From: Troy Al

The lift of the cam has nothing to do with it,
the base cir of the cam, the installed height of rockers (aftermarket)
and if you mill the heads, are reasons to change lenth of the PRs

May 27, 2004 | 12:03 PM

P Mack

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From: Phoenix

The lift of the cam does have something to do with it because it is related to the base circle. You can't add more lift with out having a smaller base circle or the lobes wouldn't fit through the cam bearings.

May 27, 2004 | 02:24 PM

BigTex

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From: East of Dallas

When you think of adding lift to the cam, the extra lobe height isn't added to the top of the lobe, but rather cut away from the center. Kinda like making a tree taller by digging out the dirt from around the base.

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